Looking to attempt to build a box for my car. Gonna be a single Alpine SWR-1241D with an Alpine MRD-M300 Amp to power it. Wiring it in parallel for 2 Ohm to get max power. If anyone can suggest a sealed box volume would be great. Mostly want SQ but loudness is semi-important also. After searching for hours all I could find was 1.3 cu ft but that was with more power(don't know if it matters). Tried some designing progs but kept getting mixed results.